Cash, Cash Equivalents and Short-term Investments (Tables)

9 Months Ended

Sep. 30, 2014

Cash and Cash Equivalents [Abstract]

Schedule of Cash, Cash Equivalents and Available-For-Sale Investments

The following tables present current and prior-year-end balances for cash, cash equivalents and short-term investments (in thousands):

	As of September 30, 2014
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair value
Cash and cash equivalents:
Demand deposits and other cash	$	9,409	$	—	$	—		$	9,409
Money market funds	6,775		—		—			6,775
Total cash and cash equivalents	16,184		—		—			16,184
Short-Term Investments:
Commercial paper	1,599		—		—			1,599
U.S. government agency securities	8,502		3		—			8,505
U.S. Treasury securities	3,551		3		—			3,554
Municipal debt securities	3,944		4		—			3,948
Corporate debt securities	83,080		12		(51		)	83,041
Total short-term investments	100,676		22		(51		)	100,647
Total cash, cash equivalents and short-term investments	$	116,860	$	22	$	(51	)	$	116,831

	As of December 31, 2013
	Amortized Cost		Unrealized Gains		Unrealized Losses			Fair value
Cash and cash equivalents:
Demand deposits and other cash	$	15,451	$	—	$	—		$	15,451
Money market funds	22,991		—		—			22,991
Commercial paper	150		—		—			150
Corporate debt securities	1,060		—		—			1,060
Total cash and cash equivalents	39,652		—		—			39,652
Short-Term Investments:
Commercial paper	750		—		—			750
U.S. government agency securities	11,275		5		(1		)	11,279
U.S. Treasury securities	5,233		2		—			5,235
Municipal debt securities	4,758		7		—			4,765
Corporate debt securities	65,982		20		(7		)	65,995
Total short-term investments	87,998		34		(8		)	88,024
Total cash, cash equivalents and short-term investments	$	127,650	$	34	$	(8	)	$	127,676

Investments Classified by Contractual Maturity Date

Classification of the cash, cash equivalent and short-term investments by contractual maturity was as follows:

(in thousands)	One year or shorter		Between 1 and 2 years		Total
Balances as of September 30, 2014
Cash and cash equivalents (1)	$	16,184	$	—	$	16,184
Short-term investments	84,589		16,058		100,647
Cash, cash equivalents and short-term investments	$	100,773	$	16,058	$	116,831
Balances as of December 31, 2013
Cash and cash equivalents (1)	$	39,652	$	—	$	39,652
Short-term investments	71,464		16,560		88,024
Cash, cash equivalents and short-term investments	$	111,116	$	16,560	$	127,676
(1) Includes demand deposits and other cash, money market funds and other cash equivalent securities, all with 0-90 day maturity at purchase.